What is linebacker?

A linebacker is a key defensive position in American football and Canadian football. Linebackers line up behind the defensive line and typically are responsible for:

• Tackling: Stopping running backs and other ball carriers.
• Pass coverage: Defending against passes by covering receivers or intercepting the ball.
• Blitzing: Rushing the quarterback to disrupt the passing game.

There are typically multiple linebackers on the field at a time, and their specific roles can vary depending on the defensive scheme. Common linebacker positions include:

• Middle Linebacker (MLB): Often the "quarterback of the defense", responsible for making calls and reading the offense.
• Outside Linebacker (OLB): Typically responsible for edge rushing and containing the run.
• Weakside Linebacker (WLB): Lines up on the weak side of the offensive formation.
• Strongside Linebacker (SLB): Lines up on the strong side of the offensive formation.

Linebackers need to be athletic, strong, and intelligent to effectively perform their duties. They must be able to quickly diagnose plays and react accordingly.